JPH07118354B2 - Wiring duct plug - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a wiring duct plug that is connected to a wiring duct at an arbitrary length position.

[Conventional technology]

Conventionally, various plugs for wiring ducts have been proposed which are connected to arbitrary length positions of the wiring ducts. However, both of them have a problem that it is difficult to perform the attaching / detaching operation, and it is difficult to obtain a reliable contact of the contact.

Therefore, a pair of levers has been proposed to perform a projecting / withdrawing operation of a contactor that comes into contact with a conductor of a wiring duct and a rotating operation of a fixing rotating piece for engaging / disengaging the plug body with the wiring duct ( Japanese Patent Application No. 62-308046).

Both levers are located on both ends of the plug body so that they can be operated by the thumbs of both hands. The fixing rotating piece is directly connected to these levers, and a gear portion is provided, and the contactor is rotated through a transmission gear meshing with the gear portion.

[Problems to be Solved by the Invention]

However, since the four gears are arranged by the gear portions of the pair of levers and the two transmission gears, there is a problem that the lateral width becomes wide.

An object of the present invention is to provide a wiring duct plug which can be downsized and which can be easily attached and detached.

[Means for Solving the Problems]

The plug for a wiring duct of the present invention is provided with a plug main body part of which is inserted into an opening along the longitudinal direction of the wiring duct, and a pair of levers each having a gear portion of a rotation axis along the insertion direction of the plug main body. The plug body is provided at both ends in the longitudinal direction of the wiring duct. The pair of levers are rotatable between a position in which one side faces the alignment direction and a position in which the one side faces outward in the alignment direction, and a pair of transmission gears that mesh with the pair of gear portions are provided in the pair of transmission gears. The gears are arranged inside the line of gears, and the teeth of this transmission gear are provided only on the part of about 1/4 circumference. According to the rotation of the pair of levers, both side surfaces of the plug main body are projected and retracted in association with the pair of transmission gears,
A pair of contactors are provided that project at positions outward of the pair of levers in the direction of arrangement and contact the conductors of the wiring duct. Further, there are provided a pair of fixing rotating pieces that are respectively directly connected to the levers, project at positions outward of the pair of levers in an arrangement direction, engage with the wiring duct, and fix the plug body to the wiring duct. .

[Action]

According to the configuration of the present invention, since the fixing rotating piece and the contact are interlocked with each other by the engagement of the gear portion of the lever and the transmission gear, the wiring duct can be mounted only by operating the lever. Will be easier.

That is, since a pair of levers is provided rotatably between a position in which one side faces in the line direction and a position in which the side faces outward in the line direction, the end of the plug body is placed in the palm of each hand. Abut on the base of the thumb and wrap it with both hands to receive it, put your thumb on each of the pair of levers facing the side, and rotate them symmetrically outward in the direction in which the levers are aligned. In response to the rotation of the plug, the pair of contacts project at the positions where both side surfaces of the plug body face to the outside in the direction in which the levers are aligned, and come into contact with the conductor in the duct, and a pair of fixed members directly connected to the pair of levers. The turning piece also projects and engages with the wiring duct at a position facing outward in the direction in which the levers are arranged.

Further, since the transmission gear has teeth formed only in the range of about 1/4 circumference, which is a necessary portion, the radius can be made smaller only in the teeth portion as compared with the case where the teeth are formed over the entire circumference. Therefore, the length in which the four gears of the pair of lever gear parts and the two transmission gears are arranged can be shortened, and the overall size can be reduced.

〔Example〕

An embodiment of the present invention will be described with reference to FIGS. As shown in FIG. 2, this wiring duct plug is provided with a plug body 1 part of which is inserted into an opening 3 along the longitudinal direction of the wiring duct 2, and a pair of levers for attachment / detachment operation are attached to the plug body 1. 4 is provided. As will be described later, the pair of levers 4 are rotatably provided between a position where one of the side surfaces faces the direction in which the levers are arranged and a position where the side faces face outward in the direction in which the levers are arranged. The wiring duct 2 has a substantially groove shape having a lip portion 2a, and is provided with three conductors 5 exposed inside from the coating.

The plug body 1 has a body 6, a cover 7 for covering the lower surface thereof, and a head cover 8 provided above. Figure 2 (C)
As shown in FIG. 3, the contact blades 9a, 9a 'of the contacts project from both side surfaces and the upper surface of the head cover 8, and these blades 9a, 9a' come into contact with the conductors 5 of the wiring duct 2. A metal frame 10 is provided on the upper surface of the body 6 (see FIG. 5), and a rotating piece 11 for fixing is fixed to the metal frame 10 at both ends of the body 6.
It is installed with 12. As shown in FIG. 2 (C), the lip portion 2a of the wiring duct 2 is fixed to the fixing rotating piece 11 and the metal frame 10.
The plug body 1 is fixed to the wiring duct 2 by sandwiching the plug body 1 up and down.

FIG. 5 is an exploded perspective view of the plug for the wiring duct.
The fixing rotating piece 11 is fixed to the fixing shaft 12 by caulking or the like via the metal frame 10, and the gear portion 4a provided on the lever 4 is fixed to the fixing shaft 12
Insert into the square shaft part of. Therefore, the lever 4 and the fixing rotating piece 11 rotate together via the fixed shaft 12. The blade 9
The contacts 9,9 'provided with a, 9a' are pipe-shaped,
The lead wire 23 is inserted and crimped. These contacts 9,
9'is inserted into the holes 15, 15 'of the insulating frame 14 together with the pressure springs 13, 13', respectively. The lower part of the insulating frame 14 is fitted in the elongated hole of the metal frame 10, and the lower ends of the two contactors 9 projecting downward of the insulating frame 14 are fitted with a gear 16 and fixed by a retaining ring 17.

The insulating frame 14 is covered with the head cover 8, and these are fixed to the metal frame 10 with fixing screws 19. Plug blade of contactor 9
9a is projected from a slit 20 formed between the head cover 8 and the insulating frame 14 so that it can be projected and retracted by rotation. The center blade 9a 'of the contactor 9'is the head cover 8
Project from the hole on the top surface of.

The metal frame (10) holds the terminal block (21) in a held state by the mounting piece (10a). The body 6 has upper and lower surfaces opened, and the gear 16, the gear portion 4a of the lever 4 and the terminal block 21 are housed inside. Three terminal boards 22 are arranged in each partition room in the terminal block 21, and contacts 9 and 9 are provided on the upper ends of the terminal boards 22.
The 9'lead wire 23 is connected by a terminal screw 24. Lead wire 2
3 is made of a flexible copper stranded wire and absorbs the rotation of the contactor 9. An electric wire for current extraction is attached to the lower end of the terminal board 22 with a terminal screw.
Connected by 25.

As shown in FIG. 1 (B), the gear 16 is a gear portion of the lever 4.
It meshes with 4a, and when the lever 4 is rotated, the contactor 9 is also interlocked and rotated, and protrudes at a position facing the outside in the arrangement direction of the pair of levers 4. The gear unit 4a of the lever 4 and the gear 16 form an interlocking mechanism 30. As shown in FIG. 7, the fixing rotating piece 11 is provided with the notch 11a,
Interference with the insulating frame 14 is avoided.

The pair of levers 4 are rotatable in a range between an angle (FIG. 7 (B)) that opens outwards and an angle (FIG. 7 (A)) that protrudes toward the same side surface of the plug body 1. There is. The rotation range is regulated by a stopper 40 as shown in FIG. The stopper 40 is composed of a wire spring or a leaf spring having a recess 40a formed therein, and an engaging projection 41, which is provided on the back surface of the lever 4 and projects in three directions, engages selectively. In addition, lever 4
Since the gear portion 4a and the transmission gear 16 mesh with each other, the engagement protrusion 41 may be provided on the transmission gear 16 instead of on the gear portion 4a.

The attachment / detachment of the plug for the wiring duct will be described. When mounting, as shown in FIG. 7 (A), the head cover 8 of the plug body 1 is inserted into the wiring duct 2 with both levers 4 projecting to the same side surface. In this state,
The ends of the plug body 1 are brought into contact with the bases of the thumbs of the palms of both hands and received so as to be wrapped by both hands. The outer levers 4 of the
By rotating the lever 4 °, the fixing rotating piece 11 directly connected to the lever 4 is turned sideways as shown in FIG. 7B, and both ends thereof are engaged with the lip portion 2a of the wiring duct 2 (see FIG. 2). (C)). Therefore, the plug body 1 is fixed to the wiring duct 2. Further, since the lever 4 meshes with the contactor 9 via the gear 16, the contactor 9 also rotates, and the plug blade 9a projects from the plug body 1 and contacts the conductor 5 of the wiring duct 2.

When detaching, the lever 4 is rotated to the side surface side of the plug body 1 contrary to the above. As a result, the fixing rotating piece 11 moves to the seventh
As shown in FIG. 1A, the plug body 9 is vertically oriented, and the plug blade 9a is retracted so that the plug body 1 can be pulled out.

With the plug blade 9a of the contactor 9 protruding,
As shown in FIG. 3A, the engaging protrusion 41 of the gear portion 4a of the lever 4
Engages the stopper 40. Therefore, the contactor 9 does not easily rotate due to vibration and the like, and the contact reliability is improved. Also,
Even when the blade 9a is not in contact, the engagement projection 41 of the gear portion 4a of the lever 4 engages with the stopper 40 as shown in FIG. 12 (C). Therefore, the retracted state of the blade 9a is maintained.
When inserting this plug into the wiring duct 2 or removing this plug from the wiring duct 2, if the blade 9a is not completely retracted, it will be caught and cannot be inserted or removed. By thus holding the angle of the lever 4 with the stopper 40, careless protrusion of the blade 9a is eliminated, and insertion / removal work is facilitated.

The wiring duct plug can be easily attached and detached because it is only necessary to rotate the lever 4. Moreover, since the pair of levers 4 are configured to be mounted by rotating the levers 4 outwardly symmetrically, the plug body 1 can be received by both hands and the thumb can be hooked on the lever 4 to rotate the lever 4. Therefore, from an ergonomic point of view, it is very easy to rotate the lever 4 while holding the plug body 1.

Further, since the portion of the plug body 1 to be inserted into the wiring duct 2 is not rotated, the insertion portion can be freely enlarged in the longitudinal direction of the wiring duct 2 and a large current capacity can be designed. The blade 9a of the contactor 9 rotates and the wiring duct 2 rotates.
Since it is in contact with the conductor 5, the cleaning function by wiping can be obtained. Therefore, even if an oxide coating film is formed on the conductor 5 or an insulating foreign substance is caught, these can be removed and a reliable contact can be obtained. Also, the contact 9
Since it rotates and contacts the conductor 5, unlike a conventional leaf spring-like contactor that moves face-to-face with each other, it is not necessary to select a springy property for the contactor 9, and a highly conductive material. Can be selected. Therefore, also from this fact, it is possible to manufacture a device having a large current capacity.

A pair of fixing rotating pieces 11 are provided at both ends of the plug body 1 and the distance between them is large, so that there is no rattling, the mounting is stable, the fixing can be performed securely, and the mounting strength is also strong. .

As can be seen from FIG. 1, the transmission gear 16 is a partial gear in which teeth are provided only in the range of approximately 1/4 circumference required for meshing, so that the two transmission gears 16 and the two gear portions 4a are The arrangement length can be shortened while arranging the four gears in a line. That is, if teeth are provided on the entire circumference of the transmission gear 16 as shown by the chain line in FIG. 1, the dimension A between the transmission gears 16 is set so that the teeth do not come into contact with the retaining ring 17 of the central contactor 9. growing.
However, when the partial gear is used as described above, the toothless portion can be formed to have a small diameter, and the dimension A can be reduced accordingly. Since the dimension A can be reduced in this way, the overall width of the wiring duct plug can be reduced. Further, since the fixing rotating piece 11 is provided with the notch 11a to avoid interference with the insulating frame 14, the length of the entire plug can be shortened.

〔The invention's effect〕

The wiring duct plug according to the present invention is such that the gearing portion of the lever and the transmission gear mesh with each other so that the fixed rotating piece and the contactor are interlocked with each other, and one side surface of the pair of levers is aligned with the arranging direction. Since it is rotatably provided between the facing position and the position facing the outer side in the arrangement direction, the pair of levers are symmetrically rotated to the outer side of the lever, so that the mounting operation to the wiring duct can be easily performed. You can In particular, since it is possible to receive the rotation of the pair of levers to the outside with both hands of the plug body and hang the thumb on the lever, the lever can be rotated more than the case of rotating the pair of transmission gears meshed with one lever. It can be lightly rotated, and since the pair of levers are turned outward with a pair of thumbs while holding the plug body with both hands, it is ergonomically easy to perform the lever rotation operation, and the mounting work is easy. It can be done easily, reliably and efficiently. Also,
Since the transmission gear has teeth formed only in the range of about 1/4 circumference, which is a necessary portion, the radius of the teeth can be reduced as compared with the case where teeth are formed on the entire circumference. Therefore, the length in which the four gears of the pair of lever gear parts and the two transmission gears are arranged can be shortened, and the overall size can be reduced.

[Brief description of drawings]

FIGS. 1 (A) and 1 (B) are cutaway bottom views showing different operating states of a gear arrangement portion according to an embodiment of the present invention, and FIG. 2 is an explanatory view of the plug mounting process, FIGS. 3 and 4. Each of the figures is also a front view and a broken side view of the plug, FIG. 5 is an exploded perspective view of the entire plug, and FIG. 6 is a plan view showing the relationship between the lever and the blade and the fixing rotating piece. , FIG. 7 is an explanatory view of the same operation, FIG. 8 is an explanatory view of the same mounting process to the wiring duct, and FIG. 9 (A) to FIG.
(D) is a plan view, front view, bottom view, and side view of the same assembly part, and FIGS. 10 (A) and 10 (B) are the assembly parts of FIG. FIG. 11 is a front view and a side view of the state, FIG. 11 is a front view of a state in which the body is further assembled, and FIGS. 12 (A) to 12 (C) are operation explanatory views showing the relationship between the lever and the stopper. 1 ... Plug body, 2 ... Wiring duct, 3 ... Opening, 4
...... Lever, 4a ...... gear part, 5 ...... conductor, 9 ...... contactor, 9a ...... plug blade, 10 ...... metal frame, 11 ...... fixing rotating piece, 16 ...... transmission gear, 40 ... … Stopper, 41 …… Engagement protrusion

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Yukihiro Matsunobu 1048, Kadoma, Kadoma City, Osaka Prefecture Matsushita Electric Works, Ltd. (56) References JP-A-50-53895 (JP, A)

Claims (1)

[Claims] 1. A plug main body, a part of which is inserted into an opening along a longitudinal direction of a wiring duct, and a pair of levers each having a gear portion of a rotation axis along the insertion direction of the plug main body are provided in the plug main body. The pair of levers are provided at both ends in the longitudinal direction of the wiring duct, and the pair of levers can be freely rotated between a position in which one side surface is facing the aligning direction and a position facing outward in the aligning direction. A pair of meshing transmission gears are arranged inside the line of the pair of gears, and the teeth of the transmission gears are provided only on a portion of approximately 1/4 circumference, and the pair of transmission gears are respectively transmitted according to the rotation of the pair of levers. Provided with a pair of contacts, which are interlocked with a gear, are both side surfaces of the plug body protruding and retracting, and protruding at a position facing outward in the direction in which the pair of levers are arranged to contact the conductor of the wiring duct. Directly connected to a pair of levers, Arrangement direction wiring ducts plug provided with a pair of fixing rotating piece engaged with projecting the wiring duct in a position facing outwardly to secure the plug body to the cable duct of the lever.